tourmaline (California state mineral)
GPTKB entity
Statements (19)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:flag
gptkb:granite |
| gptkbp:category |
silicate mineral
|
| gptkbp:chemicalFormula |
(Ca,K,Na)(Al,Fe,Li,Mg,Mn)3(Al,Cr,Fe,V)6(BO3)3(Si,Al,B)6O18(OH,F)4
|
| gptkbp:color |
varied
|
| gptkbp:crystalSystem |
trigonal
|
| gptkbp:designatedAsStateMineralIn |
gptkb:California
|
| gptkbp:designationYear |
1997
|
| gptkbp:hardnessMohs |
7–7.5
|
| gptkbp:notablePlace |
Riverside County
San Diego County |
| gptkbp:relatedGroup |
tourmaline group
|
| gptkbp:stateSymbolOf |
gptkb:California
|
| gptkbp:symbol |
gptkb:state_mineral
|
| gptkbp:usedFor |
gptkb:jewelry
gptkb:granite |
| gptkbp:bfsParent |
gptkb:Gem_and_Mineral_Hall
|
| gptkbp:bfsLayer |
6
|
| https://www.w3.org/2000/01/rdf-schema#label |
tourmaline (California state mineral)
|